Gear-shifting mechanism for harvesters



(No Model.)

G. SGHUBERT. GEAR SHIPTING MECHANISM FOR HARVBSTBRS.

Patented Aug. 23, 1892.

mumq, wAsnmnToN n c UNITED STATES PATENT OFFICE.

GEORGE SCHUBERT, OF WVALNUT, TEXAS.

GEAR-SHIFTING MECHANISM FOR HARVESTERS.

SPECIFICATION forming part of Letters Patent No. 481,202, dated August 23, 1892.

Application filed August 3, 1891. Serial No. 401,612. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE SCHUBERT, a citizen of the United States, residing at Walnut, in the county of Bosque and State of Texas, have invented a certain new and useful Gear-Shifting Mechanism for Harvesters, of which the following is a specification.

This invention relates to an improvement in gear-shifting mechanism for conveyers for harvesters and binders, and it has reference more especially to a gear-shifting mechanism for a reciprocating conveyer in which a gear is engaged and automatically disengaged as the conveyer nears the end of its stubbleward movement.

Referring to the drawings, Figure 1 is a plan view of a harvester-platform provided with my improvements, the upper plate of the platform being partly broken away to ShOW parts below in full lines, and the upper end of the vertical shaft a. is also broken away. Fig. 2 is a view looking toward the front of the machine from line 1 1, Fig. 1. Fig. 3 is a detail View of the finger-bar from the rear. Fig. 4: is a side view of the shifting guide or bar. In Fig. 5 is shown an edge view of same and a cross-section on line 4 4. Fig. 6 is a detail view of the movable bearing. Fig. 7 is a view on line 2 2 of Figs. 1 and 2, looking stubbleward. Fig. 8 is an enlarged view of the drum provided with the spring and cord. Fig. 9 is a detail View of the drum. Fig. 10 is a cross-section of the finger-bar, taken on line 3 3 of Fig. 2. g

Referring to the drawings, A designates the finger-bar. A is a vertical flange on its front edge, extending from the shoe A to the frame of the harvester. (Not shown in the drawings.)

A are the usual guards secured to the front edge of the finger-bar A.

A is the lower plate of the platform secured with its front edge to the lower flange of the finger-bar and with its rear edge to the sill A (Shown in Fig. 1 in dotted lines.)

A and A indicate the upper plates of the platform. The plate A is secured with its front edge to the finger-bar and resting with its rear on the bearing (1 and block B (Shown in dotted lines.) A slot hf is made in the plate A as shown in Fig. 1,1n which the rod f operates. The plate A 1s secured to the sills A and A (Shown in dotted lines in Fig. 1. A slot A is left between the plates A and A and notches B are formed on the inwardly-proj ecting edges of the plates A and A for the operation of the conveyer.

O designates the grainboard secured to the plates A A and A and to the finger-bar in any well-known manner.

a designates a vertical shaft journaled with its upper end in a bearing supported by the harvester-frame, (not shown,) and with its lower end in a bearing a, supported on the bar a and provided with ears or lugs c extending on the bracket g and the finger-bar A, as shown in Fig. 7, and provided with a bevelpinion a in position to engage with bevel-pinion 1).

b designates a shaft slightly inclined and extending from the vertical shaft to to the inner end of the platform and journaled with its grain endin a pivoted bearing 6 and in a movable bearing f near its stubble end adjacent the bevel-pinion b, and provided with a collar g adjacent the movable bearing f, and a bevelpinion b on its stubble end in position to be engaged and disengaged with the bevel-pinion a and a bevel-pin ion 6 near its grain end in position to engage with bevel-pinion b on the shaft d. Said shaft cl is located on the inner or stubble end of the platform and is journaled in a bearing (1 near its front end, and, extending through the strip A and journaled with its rear end in the sill A and provided with a drum d near the center of the slot A and a bevel-pinion b adjacent the front side of the bearing (1 and in mesh with the bevel-pinion b the front end of said shaft (1 projects through the bevel-pinion 12 for the purpose hereinafter stated.

6 is a pivoted bearing for the grain end of shaft b,anchored with its rear side on the front end of shaft d, and provided with a stud or trunnion e on its front side, journaled in the bracket e secured to the rear flange of the finger-bar A.

f is a movable bearing having a perforation f near its center to receive the shaft b, and having its front end slightly reduced to enter a roller f (Shown in Fig. 2 and in dotted lines in Fig. 1.)

g is a bracket secured to the rear end of the bar a as shown in Fig. 1, and provided with a nearly vertical arm 9 projecting slightly grainward, and of proper height to form a pivot for the rear end f of the movable bearsff is a guide having a slot f and a flange f projecting partly over the slot f on the front side of the guide. Said slot f has a depression f in its upper or grain end and a lug f on its lower and stubble end, provided with a stud to receive the antifriction roller f, to operate on the block or track j', which is secured to the finger-bar A and provided with a depression f near its stubble end. Said track is made inclined, as shown in Fig. 2, and is secured to the finger-bar A, adjacent the vertical flange A and opposite the vertical shaft a. The guide f is formed on the stubble end of the rod f Said rod f extends grainward to the platform and is pivoted to the front end of a lever 71 and provided with a lug it near the center of its length, from which lug a draw-rod h is extended to the operators seat. (Not shown in the drawings.) The lever h is pivoted on a block 7L3, secured in the platform near the stubble end of the latter, and extends its rear end in the passage-way of the conveyer B and with its rear end depressed to operate beneath the cord 2'.

J 5 designates a drum rigidly secured to its axle J by which it is pivoted in the platform in the plates A and A near the stubble end of the platform, and said drum is provided with flanges J 2 and J, as shown in Fig. 9, with the lower flange J having its edge beveled from the upper side. Said drum J is provided with a spring J having its inner end secured to the drum J 5 and its outer end secured to a stud J secured in the plate A as shown in dotted lines in Fig. 1, and shown in Figs. 2 and S.

'i designates a cord secured with one end to the drum d and extending over a sheave ?L at the grain end of the platform, and secured with its other end to the drum J and wound on said drum J a proper number of times to allow the conveyer B to move from the grain end to the stubble end of the platform. Said conveyerB is secured a proper distance from the end of the cord 1', secured on the drum d, to allow it to move to the grain end of the platform. The sheave z" is secured near the center of the slot A on its shaft 4?, which has its bearings in the block 13 and strip A. (Shown in dotted lines in Fig. 1.)

I prefer to place the drum J near the stubble end of the platform to avoid the employing of guide-rollers to guide the cord on the sheave c" and in returning to the drum J The cross-bar a is screwed to the finger-bar A near its stubble end.

a is a barextending from the front end of the bar a to the shoe A The operation is a follows, viz: Then the operator desires to start the conveyer, he draws the draW-rodf stubbleward, thus shifts the guide f in the same direction, thereby elevating the front end of the movable hearing f, which elevates the stubble end of the shaft 1), thus engaging the bevel-pinion b with the bevel-pinion a The vertical shaft a is rotated in the direction as shown by arrow in Fig. 1 by mechanism of the harvester. (Not shown in the drawings.) As the shaft 1) is rotated it in turn rotates the shaft (1 by the bevel-pinions b and b and the drum d, being rigidly secured to the shaft d, it is thus rotated with the shaft (Z and causes the cord 71 to wind on said drum (1, thus drawing the conveyer stubbleward and unwinding the cord from the drum J As the conveyer moves stubbleward it moves against the lever 72, moving its near end in the same direction, which moves its front end in the opposite direction or grainward, thus moving the guide f in the same direction and disengaging the bevel-pinion b from bevel-pinion a thereby discontinuing the forward or stubbleward movement of the conveyer. as the bevel-pinions b and a are disengaged the spring J 6 will wind the cord 2' back on the drum J 5 again, thus moving the conveyer to the grain end of the platform, where it will remain until again started by the operator, as heretofore stated. The guide f is supported by its antifriction roller f which operates on the block f adjacent the rear side of the vertical flange A, and is prevented from moving rearward by the roller f operating adjacent the rear or inner side of the flange f Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a gear-shiftin g mechanism for harvesters, the combination,with a bar f provided with a guide f, havinga slot fand a depression f in said slot f an antifriction roller f on'said guide, a block or track f having a recess f a movable bearing f, pivoted to the harvester-frame with one end and extending with its other end to the guidef, and provided with an antifriction roller f to operate in the guide f", a draw-rod h, a shaft'a, and a shaft 1), bevel-pinions a and b, as shown, and for the purpose described.

2. In a gear-shifting mechanism for harvesters, the combination, with a bar f provided with a guide f havinga slot f and a depression f in said slot an antifriction roller f on said guide, a block or track f having a recess f ,a movable bearing fipivoted with one end to the harvester-frame and extending with its other end in the slot f substantially as shown, and for the purpose described, shaft a and shaft b, bevel-pinions a and b, a shaft d, a drum d on said shaft cl, bevel-pinions b and b on the shafts b and d, a pivoted bearing 6, a cord 7., secured to the drum d and. to a spring-drum J and attached to a conveyer to operate in the platform and connected to the rod f ,a lever h ,pivoted in the platform, as shown, and for the purpose described.

3. In a gear-shiftin g mechanism for harvest- As soon ers, the combination,with a bar f provided with a gnidefflhaving a slot f and a depression f in said slot f", an antifriction roller f on said guide, a block or track f having 5 a recess f ,a movable bearing f,pivoted with one end to the harvester-frame and having an antifriction roller on its other end to engage with the slot f shaft a, and shaft b,beve1- pinion a and bevel-pinion b, bevel-pinions 10 b and b on shaft 1) and d, a pivoted bearing e, a drum d on shaft d,a spring-drum J pivoted in the platform, a sheave 2", a cord 1',

passing over the sheave and having one end attached to the drum cl and the other end attached to the drum J a conveyer attached to the said cord for operating in the platform, and a lever 71 pivoted in the platform connected at one end tothe bar f andhavingits other end in the path of the conveyor, substantially as described.

GEORGE SOHUBERT. Witnesses:

W. T. HOWELL, J. A. MOOLELLAN. 

